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Posted by Ricy (217.136.72.109) on December 26, 2002 at 06:04:22:
???My question is what source for synchronization I must use or how I must
config the synchronization at the Add/Drop Mux´s in Stations???
I use an electrical back to back connection.
The Alcatel SDH equipment chain is as follows:
#Station1:
ADD/drop_Mux[(21x2Mbit)>STM1] >>
Radio_Link_4GHz assembly[RSA(STM1) + MOD/dem + SRS + TX/rx] >>
#Station2:
Radio_Link_4GHz assembly[RX/tx;SRS;DEM/mod;RSA(STM1)] >>Add/DROP_Mux[(STM1)>21x2 Mbit]
Here is the back to back connection: this 21x2Mbit
are directly electrical connected with:
ADD/drop_Mux[21x2Mbit>(STM1)] >>
Radio_Link_4GHz assembly[RSA(STM1) + MOD/dem + SRS + TX/rx] >>
#Station3:
Radio_Link_4GHz assembly[RX/tx;SRS;DEM/mod;RSA(STM1)] >>
add/DROP_Mux(21x2 Mbit).
#Subscriber for E1: 2Mbit (ETI) DAB(digital audio broadcasting) signal
from Station1 to Station3.
#In Station3 the (ETI) DAB is inserted in the DAB R&S Transmitter; but
this one comes in Alarm because the jitter is to Big)
#Over the Whole SDH link Station1 to Station2 there are no Alarms.
#No External Sync source is used for the moment.
???My question is what source for synchronization I must use or how I must
config the synchronization at the Add/Drop Mux´s in Stations???
Thanks and kind regards, Ricy
OtherInfo:
The equipments we have in use are:
# Wireline 1511 (15 x Voice Channel + 15 x 64kbps)
# Wireline 1515 (cross connect for 1511)
# SDH 1651SMC (Add/drop MUX)(3x34Mbps + 21x2Mbps + STM1)
# Radio 96HTMN40 (4 & 6 GHz) (32 QAM & 128 QAM)
# Analoge (ETSI) video codecs 1722VC (for Pal+ )
# MPEG video codecs 1761VC
# Equipment Manager 1353EM R1.7.1PC3 On Sun Solaris.
Ricy.